amniotic fluid

* Amnionic fluidAmniocentesis is most often performed at 15-18 weeks for prenatal diagnosis, when it is likely that there are sufficient fetal cells to allow successful culture for;cytogenetic studiesenzyme analysisDNA analysisRisks of amniocentesis;maternal or fetal trauma - Perforation of the placenta may cause fetomaternal hemorrhage, which may incite or enhance maternal isoimmunization as well as initiate placental hemorrhageinfectionabortion or preterm laborFunctions;It cushions and thereby provides protection of the fetus against physical trauma to the maternal abdomenit is a